A New Jersey man celebrating his graduation from a nursing program was killed and his friend wounded during a carjacking yesterday at the Trump Taj Mahal Casino in Atlantic City, cops and family said.

Sunil Rattu, 28, was with Radha Ghetia, 24, a classmate, when they were set upon by three thugs at around 8 a.m. in the parking garage, authorities said.

“They were robbed, and at that point, they were carjacked, and the female victim was forced to drive to the area where the shooting took place,” Atlantic County Prosecutor Ted Housel told the Atlantic City Press.

Police responding to 911 calls found the victims bleeding and their Land Rover parked in an alley nearby.

Aurelia Lyons told the paper she was walking her dog when a woman covered in blood came running to her.

“She said call 911, so I ran into the house and called 911,” Lyons recalled.

Rattu died instantly. Ghetia was rushed to an area hospital with “a clean, through-and-through shot” and was expected to survive, the paper said.

Cops were still hunting for the attackers early today.

Rattu was remembered as a hardworking and loving brother who took care of his six siblings.

“He’s an amazing family man,” said his younger brother Anil at their Old Bridge, NJ, home.

“He’s the best guy ever. He’s the second youngest of the seven of us. Five sisters and me, yet he took care of the whole family.”

To help out, Sunil worked at the family’s gas station.

“He opened at 5 a.m. and came home at 12, sometimes 1 a.m.,” Anil said.

Anil, 24, said Sunil had just finished the nursing program and was celebrating with his classmate Ghetia.

“They were so excited. They left to go to Atlantic City to get away,” Anil said.

Anil said he couldn’t understand why the muggers had to murder his beloved brother.

“He never gave problems to anybody. If you want the money or want the car, take the money, take the car — don’t take somebody’s life. Don’t ruin a family,” he said.

“I’m still in shock. I still think he’s coming home. I keep looking at my phone to see if I have a text from him.”

Anil said his parents are heartbroken, but “they are strong, so I have to try and be strong.”